Apparently Angelina isn’t ALWAYS so pretty — according to a new report in In Touch Weekly, her sons have given her a pretty nasty nickname!

Ouch – this is harsh. Although Angelina Jolie, 34, is seemingly the perfect mother on paper (and in pictures as well – she’s always kissing or cuddling her brood of six) a cleaning lady at NYC’s Waldorf Astoria – Angelina’s Big Apple mainstay – as well as a former bodyguard say that sons Maddox, 8, and Pax, 6, call her ‘The Dragon.’ HARSH!

“She was always snapping at them, so once, when she left the room, Pax and Maddox called her ‘The Dragon’,” a maid named “Anna” tells In Touch Weekly. “They started running around the room with play swords, yelling, ‘Slay the dragon! Slay the dragon! Slay the dragon!’”

Agrees Angelina’s former bodyguard of five years (who calls himself “Bill” but is believed to be Mickey Brett, a seven-year employee of Angelina’s that was fired in 2007’) “They called her that a lot.”

If that’s true, we just have to wonder what partner Brad Pitt , 46, calls her in private!